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 * modification, are permitted provided that the following conditions are
 * met:
 *
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 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 *       copyright notice, this list of conditions and the following
 *       disclaimer in the documentation and/or other materials provided
 *       with the distribution.
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 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef NYUSTRPOOL_HPP_
#define NYUSTRPOOL_HPP_

#include <cstddef>

namespace nyu {

class String;
class StaticString;
class StrPool {
public:
    String* get(char* str, int);
    String* get(const char* str, int);
    String* get(const char* str, int, int);

    static void initialize();
    static void finalize();

    static StrPool* getInstance() {
        return instance_;
    }

    static String* get(char* str) {
        return instance_->get(str, 0);
    }

    static String* get(const char* str) {
        return instance_->get(str, 0);
    }

    static String* get(const char* str, bool) {
        return instance_->get(str, 0, 0);
    }

    static void addStatic(StaticString* str);

private:
    StrPool();
    ~StrPool();

    struct Entry {
        Entry(String* v, Entry* n = 0) : value(v), next(n) {
        }
        ~Entry();

        String* value;
        Entry* next;
    };

    Entry** ents_;
    size_t nents_;

    void rehash();
    void add(String* str);

private:
    static StrPool* instance_;
};

}

#endif /* NYUSTRPOOL_HPP_ */
